John Herschel discovered NGC 3755 = h920 on 11 Mar 1831 and noted "eF; pmE; pL; gbM." His position and desciption matches UGC 6577.

400/500mm - 17.5" (4/14/01): fairly faint, fairly large, elongated 2:1 NW-SE, 2'x1'. Broad, weak concentration to a slightly brighter oval core. A couple of very faint stars are nearby.

Notes by Steve Gottlieb